{"id":584,"date":"2026-08-06T16:38:00","date_gmt":"2026-08-06T16:38:00","guid":{"rendered":"https:\/\/www.merckconnect.com\/idvynso\/?page_id=584"},"modified":"2026-08-20T08:46:54","modified_gmt":"2026-08-20T08:46:54","slug":"drug-interactions","status":"publish","type":"page","link":"https:\/\/www.merckconnect.com\/idvynso\/drug-interactions\/","title":{"rendered":"Drug interactions"},"content":{"rendered":"<link rel='stylesheet' id='vivid360-spacer-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/spacer\/css\/style.min.css?ver=1775653743' media='all' \/>\n\n<div style=\"background-color:transparent;--desktop-spacer:0px;--tablet-spacer:0px;--mobile-spacer:24px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n<link rel='stylesheet' id='vivid360-hero-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/hero\/css\/style.min.css?ver=1785934614' media='all' \/>\n\n<div id=\"\" class=\"wp-block-vivid360-hero\"><div class=\"vivid360-hero-container align-left align-middle ratio-70-30 horizontal desktop text-align-left is-overlay-style is-full-overlay is-opaque-overlay mobile-is-overlay-style mobile-is-full-overlay mobile-is-opaque-overlay mobile-uses-custom-styles\" style=\"border-width:0;border-style:solid;border-top-left-radius:0;border-top-right-radius:0;border-bottom-right-radius:0;border-bottom-left-radius:0;color:#092e49;--minHeight:218px;--mobileMinHeight:281px\"><div class=\"wide_screens hidden\" data-value=\"default\"><\/div><picture><source media=\"(max-width: 767px)\" srcset=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Full-Overlay-mob-1.png?w=767\"\/><source media=\"(min-width: 768px) and (max-width:1024px)\" srcset=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Full-Overlay-desk_d25180.png?w=1024\"\/><source media=\"(min-width: 1025px) and (max-width:1440px)\" srcset=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Full-Overlay-desk_d25180.png?w=1440\"\/><img decoding=\"async\" width=\"1128\" height=\"218\" loading=\"lazy\" data-src=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Full-Overlay-desk_d25180.png?w=1232\" src=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Full-Overlay-desk_d25180.png?w=1232\" alt=\"\" class=\"hero-image\" style=\"--desktop-focal-x:50%;--desktop-focal-y:50%;--mobile-focal-x:50%;--mobile-focal-y:0%;--tablet-focal-x:50%;--tablet-focal-y:50%\"\/><\/picture><div class=\"hero-wrapper\"><div class=\"hero-content\"><h1 style=\"--headlineFontSize:36px;--headlineFontSizeTablet:36px;--headlineFontSizeMobile:20px;--headlineLineHeight:45px;--headlineLineHeightTablet:45px;--headlineLineHeightMobile:30px\" class=\"hero-title fontWeightBold\">Drug interactions: effects of IDVYNSO<sup>TM<\/sup> (doravirine\/islatravir) on other drugs<\/h1><p class=\"hero-description\"><\/p><div class=\"hero-btn-group\"><\/div><div class=\"hero-caption\"><\/div><\/div><\/div><\/div><div class=\"hero-caption-2desktop\"><\/div><\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:24px;--tablet-spacer:24px;--mobile-spacer:24px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n<link rel='stylesheet' id='vivid360-heading-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/heading\/css\/style.min.css?ver=1775653743' media='all' \/>\n\n<div class=\"vivid360-heading\" id=\"a553b9478-7b54-4daf-8f37-6494ad5c1bba\"><h4 class=\"has-dark-text-color content-width fontWeightRegular\" style=\"--desktopFontSize:var(--h4FontSizeDesktop);--tabletFontSize:var(--h4FontSizeDesktop);--mobileFontSize:var(--h4FontSizeMobile);--desktopLineHeightSize:var(--h4LineHeightDesktop);--tabletLineHeightSize:var(--h4LineHeightDesktop);--mobileLineHeightSize:\" id=\"\"><strong>IDVYNSO is contraindicated when&nbsp;co-administered with:&nbsp;<\/strong><\/h4><\/div>\n\n\n<link rel='stylesheet' id='vivid360-list-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/list\/css\/style.min.css?ver=1775653743' media='all' \/>\n\n<div class=\"vivid-block-list content-width  default-list block-54062f1f-bc9f-4c09-8bdc-8bd59956c97a\" data-image=\"\" data-image-mobile=\"\" data-image-all=\"\" data-image-all-mobile=\"\" data-icon-color=\"#333\" data-text-color=\"#333\" data-client-id=\"block-54062f1f-bc9f-4c09-8bdc-8bd59956c97a\"><ul class=\"first-level\"><li>drugs that are strong cytochrome P450&nbsp;(CYP)3A enzyme inducers as significant&nbsp;decreases in doravirine plasma&nbsp;concentrations may occur, which may&nbsp;decrease the effectiveness of IDVYNSO.&nbsp;<\/li><li>lamivudine (3TC) or emtricitabine (FTC) as&nbsp;significant decreases in islatravir-triphosphate (ISL-TP) concentrations may&nbsp;occur, which may decrease the&nbsp;effectiveness of IDVYNSO.<\/li><\/ul><\/div>\n\n\n\n<div class=\"vivid360-heading\" id=\"ae5a7551b-5e37-49b4-a1a4-064f06096964\"><h4 class=\"content-width fontWeightRegular\" style=\"--desktopFontSize:var(--h4FontSizeDesktop);--tabletFontSize:var(--h4FontSizeDesktop);--mobileFontSize:var(--h4FontSizeMobile);--desktopLineHeightSize:var(--h4LineHeightDesktop);--tabletLineHeightSize:var(--h4LineHeightDesktop);--mobileLineHeightSize:\" id=\"\"><strong>IDVYNSO is a complete regimen for the treatment of HIV-1 infection. It is not recommended to be administered with other HIV-1 antiretroviral medications.<\/strong><\/h4><\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:16px;--tablet-spacer:16px;--mobile-spacer:16px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n<link rel='stylesheet' id='vivid360-separator-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/separator\/css\/style.min.css?ver=1775653743' media='all' \/>\n\n<hr class=\"wp-block-vivid360-separator has-text-color has-background has-primary-background-color has-primary-color desktopwidth mobileWidth\" style=\"height:0;--desktopwidth:744px;--mobileWidth:358px\"\/>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:24px;--tablet-spacer:24px;--mobile-spacer:24px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n\n<div class=\"vivid360-heading default-hcp-fontsize default-hcp-tablet-fontsize default-hcp-mobile-fontsize\" id=\"a1627d5b6-b890-41fe-bd8c-dea73e3dddf1\"><h2 class=\"content-width fontWeightRegular\" style=\"color:#092e49;--desktopFontSize:var(--h2FontSizeDesktop);--tabletFontSize:var(--h2FontSizeDesktop);--mobileFontSize:var(--h2FontSizeMobile);--desktopLineHeightSize:var(--h2LineHeightDesktop);--tabletLineHeightSize:var(--h2LineHeightDesktop);--mobileLineHeightSize:\" id=\"\"><strong>Based on drug interaction studies conducted separately for doravirine and islatravir, no clinically significant drug interactions have been observed following the co-administration of those components of IDVYNSO and the following drugs:<\/strong><\/h2><\/div>\n\n\n\n<div style=\"background-color:transparent;height:8px\" class=\"wp-block-vivid360-spacer vivid360-spacer spacer-8\"><\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-top mb-0 is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"vivid360-heading\" id=\"a2299a21e-a02f-4437-bb1f-d655c4437993\"><h3 class=\"has-dark-text-color has-text-align-center content-width fontWeightRegular\" style=\"--desktopFontSize:var(--h3FontSizeDesktop);--tabletFontSize:var(--h3FontSizeDesktop);--mobileFontSize:var(--h3FontSizeMobile);--desktopLineHeightSize:var(--h3LineHeightDesktop);--tabletLineHeightSize:var(--h3LineHeightDesktop);--mobileLineHeightSize:;--tabletAlign:center;--mobileAlign:center\" id=\"\"><strong>Drug interaction studies for doravirine<\/strong><\/h3><\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:16px;--tablet-spacer:16px;--mobile-spacer:11px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n\n<figure class=\"wp-block-flexible-table-block-table is-content-justification-center is-style-default has-link-color has-regular-font-size wp-elements-83b9407d6dcdfaef449624fd7f1a9aae\"><table class=\"has-white-color has-text-color has-background has-link-color\" style=\"border-style:solid;border-color:#a4a4a4;border-collapse:collapse;border-width:1px;border-radius:1px;background-color:#555555\"><thead><tr><th style=\"background-color:#555;width:400px;font-size:16px;color:#FFF;border-width:1px;border-color:#a4a4a4;border-radius:1px\"><strong>Agents<\/strong><\/th><th style=\"background-color:#c01cd9;font-size:16px;color:#FFF;text-align:center;border-width:1px;border-style:solid;border-color:#a4a4a4;width:150px\"><strong>Doravirine<\/strong><\/th><\/tr><\/thead><tbody><tr><td style=\"color:#333333;font-size:16px;border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px\">islatravir<\/td><td style=\"text-align:center;color:#333333;border-style:solid;border-color:#a4a4a4;width:150px;font-size:18px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">dolutegravir<\/td><td style=\"border-style:solid;border-color:#a4a4a4;text-align:center;color:#333333;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">ritonavir<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">tenofovir disoproxil fumarate<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">lamivudine<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">elbasvir and grazoprevir<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">ledipasvir and sofosbuvir<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">ketoconazole<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">AI(OH)<sub>3<\/sub>\/Mg(OH)<sub>2<\/sub>\/simethicone containing antacid<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">pantoprazole<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">atorvastatin<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">an oral contraceptive containing ethinyl estradiol and levonorgestrel<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">metformin<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">methadone<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><\/tbody><tfoot><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">midazolam<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><\/tfoot><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"vivid360-heading\" id=\"a33b29933-9794-4bab-b448-81fbff158d8f\"><h3 class=\"has-dark-text-color has-text-align-center content-width fontWeightRegular\" style=\"--desktopFontSize:var(--h3FontSizeDesktop);--tabletFontSize:var(--h3FontSizeDesktop);--mobileFontSize:var(--h3FontSizeMobile);--desktopLineHeightSize:var(--h3LineHeightDesktop);--tabletLineHeightSize:var(--h3LineHeightDesktop);--mobileLineHeightSize:;--tabletAlign:center;--mobileAlign:center\" id=\"\"><strong>Drug interaction studies for islatravir<\/strong><\/h3><\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:16px;--tablet-spacer:16px;--mobile-spacer:11px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n\n<figure class=\"wp-block-flexible-table-block-table is-content-justification-center is-style-default has-link-color has-regular-font-size wp-elements-936f5cee4382e3048b2d46116e5ce400\"><table class=\"has-white-color has-text-color has-background has-link-color\" style=\"border-style:solid;border-color:#a4a4a4;border-collapse:collapse;border-width:1px;border-radius:1px;background-color:#555555\"><thead><tr><th style=\"background-color:#555;width:400px;font-size:16px;color:#FFF;border-width:1px;border-color:#a4a4a4;border-radius:1px\"><strong>Agents<\/strong><\/th><th style=\"background-color:#c01cd9;font-size:16px;width:150px;color:#FFF;text-align:center;border-width:1px;border-style:solid;border-color:#a4a4a4\"><strong>Islatravir<\/strong><\/th><\/tr><\/thead><tbody><tr><td style=\"color:#333333;font-size:16px;border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px\">doravirine<\/td><td style=\"text-align:center;color:#333333;border-style:solid;border-color:#a4a4a4;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">dolutegravir and tenofovir disoproxil fumarate<\/td><td style=\"border-style:solid;border-color:#a4a4a4;text-align:center;color:#333333;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">atorvastatin<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">an oral contraceptive containing ethinyl estradiol and levonorgestrel<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">metformin<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><tr><td style=\"border-style:solid;border-width:1px;border-color:#a4a4a4;width:400px;color:#333333\">methadone<\/td><td style=\"border-style:solid;border-color:#a4a4a4;color:#333333;text-align:center;width:150px\">\u25cf<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"background-color:transparent;height:8px\" class=\"wp-block-vivid360-spacer vivid360-spacer spacer-8\"><\/div>\n\n\n<link rel='stylesheet' id='vivid360-columns-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/columns\/css\/style.min.css?ver=1775653743' media='all' \/>\n\n<div class=\"wp-block-vivid360-columns vivid360-columns is-not-stacked-on-mobile not-stacked-on-tablet mb-0\" style=\"--desktopPadding:;--tabletPadding:;--mobilePadding:;--gutterWidth:1rem;--mobGutterWidth:1rem;border-style:;border-radius:0;border-width:0\"><link rel='stylesheet' id='vivid360-column-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/column\/css\/style.min.css?ver=1775653743' media='all' \/>\n\n<div class=\"wp-block-vivid360-column vivid360-column\" style=\"--tabletColumnWidth:52%;--mobileColumnWidth:32%;--tabletColumnOrder:;--mobileColumnOrder:;--colDeskPadding:;--colTabPadding:;--colMobPadding:;flex-basis:56%;border-style:;border-radius:0;border-width:0\"><\/div>\n\n\n\n<div class=\"wp-block-vivid360-column vivid360-column\" style=\"--tabletColumnWidth:4%;--mobileColumnWidth:4%;--tabletColumnOrder:;--mobileColumnOrder:;--colDeskPadding:;--colTabPadding:;--colMobPadding:;flex-basis:4%;border-style:;border-radius:0;border-width:0\">\n<p class=\"has-dark-text-color has-text-color has-link-color has-regular-font-size wp-elements-365219aa9925c5eaa90876e6516c1561\">\u25cf            <\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-vivid360-column vivid360-column\" style=\"--tabletColumnWidth:30%;--mobileColumnWidth:30%;--tabletColumnOrder:;--mobileColumnOrder:;--colDeskPadding:;--colTabPadding:;--colMobPadding:;flex-basis:30%;border-style:;border-radius:0;border-width:0\">\n<p class=\"has-dark-text-color has-text-color has-link-color has-regular-font-size wp-elements-a3f3edcb8d8bd4a166c897f39c2a9791\"><span class=\"no-wrap-text\">Indicating no interaction<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:24px;--tablet-spacer:24px;--mobile-spacer:70px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n<link rel='stylesheet' id='vivid360-image-css-css' href='https:\/\/www.merckconnect.com\/idvynso\/wp-content\/themes\/cex-wpvip-mhh-merck-vivid360-theme-1-12\/blocks\/image\/css\/style.min.css?ver=1783718418' media='all' \/>\n\n<div class=\"wp-block-vivid360-image\"><div class=\"img-container ml-0 mr-0 mb-0 mt-0\"><figure class=\"wp-block-vivid360-image is-style-default has-mobile-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Group-268@2x.png\" alt=\"\" class=\"wp-image-585  style-noshadow deskHeightAuto  \" width=\"2256\" height=\"430\" title=\"Group-268@2x\" style=\"height:430px;width:2256px\" srcset=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Group-268@2x.png 1023w, https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Group-268@2x.png?resize=300,57 300w, https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/Group-268@2x.png?resize=768,146 768w\" sizes=\"auto, (max-width: 2256px) 100vw, 2256px\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/2026\/08\/DDI_Callout12_Mobile.svg\" alt=\"\" class=\"wp-image-586  style-noshadow mobile-image   \" width=\"358\" height=\"323\" title=\"DDI_Callout1+2_Mobile\" style=\"height:323px;width:358px\" srcset=\"https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/\/2026\/08\/DDI_Callout12_Mobile.svg 358w, https:\/\/www.merckconnect.com\/idvynso\/wp-content\/uploads\/sites\/338\/\/2026\/08\/DDI_Callout12_Mobile.svg?resize=300,271 300w\" sizes=\"auto, (max-width: 358px) 100vw, 358px\" \/><\/figure><\/div><\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:8px;--tablet-spacer:8px;--mobile-spacer:0px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile mt-0 mr-0 mb-0 ml-0\"><\/div>\n\n\n\n<hr class=\"wp-block-vivid360-separator has-text-color has-background has-primary-background-color has-primary-color desktopwidth mobileWidth\" style=\"height:0;--desktopwidth:66%;--mobileWidth:100%\"\/>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:16px;--tablet-spacer:16px;--mobile-spacer:16px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n\n<div class=\"vivid360-heading default-hcp-tablet-fontsize\" id=\"a2aef008c-8367-4e7f-8a74-c68f8d5e7d71\"><h2 class=\"has-dark-text-color content-width fontWeightBold mt-0 mb-0\" style=\"--desktopFontSize:24px;--tabletFontSize:var(--h2FontSizeDesktop);--mobileFontSize:20px;--desktopLineHeightSize:36px;--tabletLineHeightSize:var(--h2LineHeightDesktop);--mobileLineHeightSize:\" id=\"\">Considering a change in antiretroviral (ARV) regimen for the individuals you are treating?<\/h2><\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:24px;--tablet-spacer:24px;--mobile-spacer:24px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n\n<p class=\"has-regular-font-size\"><strong><a href=\"https:\/\/www.merckconnect.com\/idvynso\/plwh-profile-1\/\" type=\"link\" id=\"https:\/\/www.merckconnect.com\/idvynso\/plwh-profile-1\" aria-label=\"#\">Walk through a PLWH clinical scenario &gt;<\/a><\/strong><\/p>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:40px;--tablet-spacer:40px;--mobile-spacer:40px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n\n\n\n<div class=\"vivid360-heading\" id=\"a9ee4cf5d-4816-412d-98a0-61786a3af962\"><h4 class=\"has-dark-text-color content-width fontWeightBold mt-0 mb-0\" style=\"--desktopFontSize:18px;--tabletFontSize:18px;--mobileFontSize:16px;--desktopLineHeightSize:27px;--tabletLineHeightSize:27px;--mobileLineHeightSize:\" id=\"\">Abbreviations<\/h4><\/div>\n\n\n\n<div style=\"background-color:transparent;height:16px\" class=\"wp-block-vivid360-spacer vivid360-spacer spacer-16\"><\/div>\n\n\n\n<div class=\"paragraph-wrapper\"><div class=\"_bbae7b0e-cee6-4b40-b9f1-064a88e789ed \" id=\"\"><p style=\"font-size:16px\">ADA, adenosine deaminase; dCK, deoxycytidine kinase; PLWH, person(s) living with HIV.<\/p><\/div><\/div>\n\n\n\n<div style=\"background-color:transparent;--desktop-spacer:24px;--tablet-spacer:24px;--mobile-spacer:24px\" class=\"wp-block-vivid360-spacer vivid360-spacer-desktop vivid360-spacer-tablet vivid360-spacer-mobile\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Walk through a PLWH clinical scenario &gt; ADA, adenosine deaminase; dCK, deoxycytidine kinase; PLWH, person(s) living with HIV.<\/p>\n","protected":false},"author":4249,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_trash_the_other_posts":false,"editor_notices":[],"footnotes":""},"ga4_page_audience":[247],"ga4_page_birn_id":[],"ga4_page_branding":[264],"ga4_page_businessunit":[],"ga4_page_campaign":[],"ga4_page_content_purpose":[320],"ga4_page_customer_journey_stage":[341],"ga4_page_customer_specialty":[366],"ga4_page_experience":[],"ga4_page_indication":[471],"ga4_page_material_intent":[563],"ga4_page_product":[616],"ga4_page_region":[793],"ga4_page_therapeuticarea":[839],"user_role":[],"mhh-area-of-interest":[],"access":[],"user_status":[],"class_list":["post-584","page","type-page","status-publish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Drug Interactions for IDVYNSO\u2122 (doravirine\/islatravir)<\/title>\n<meta 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